Boot upper



FIG. 1 is a front perspective view of a boot upper showing my new design.

FIG. 2 is an inner side elevational view thereof.

FIG. 3 is an outer side elevational view thereof.

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a front elevational view thereof.

All of the broken lines in FIGS. 1 to 5 are included for the purpose of illustrating environmental structure and form no part of the claimed design. 

The ornamental design of a boot upper, as shown and described. 